The development of swarm robotics strives for resilience, a key factor in this is energy supply. Without energy a robot swarm cannot operate, so a self sustaining power management system is of great importance. In this thesis, the design of the power management system control hardware and firmware for the new DeciZebro is discussed. The power flow between the battery and peripherals of the robot will be controlled with safety as a top priority. The firmware of the power system reflects the thinking and being of a real animal in code. When the power system wants to recharge it will tell the brain of the robot to get back to a charging station. In case of an error, a pain signal in the form of an interrupt is send through the nerves of the robot. The firmware and hardware design is done, and several parts of the system have been tested and verified. The prototype PCB is completed, however testing has not yet taken place at the current time.